00447nam a2200193Ia 4500003000400000005001700004008004100021020001800062040000900080082002100089100001700110245004900127250000800176260001400184260002400198260000900222300001100231365001100242OSt20250122150344.0241218s9999    xx            000 0 und d  a9788184116472  cJKRC  223a621.3bKRI.B  aKrishna, Bal 0aWaves, vibrations and electromagnetic theory  a1st  aNew Dehli  bSonali Publications  c2021  a221 p.  b712.50